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4 Answers

Is it a good idea to use dense pack celllulose insualtion in SE Pennsylvania?

Should I dense pack my attic ceiling?

Hi,

I need to re-roof my entire house including removing all of the sheathing.

I see this as an opportunity to re-insulate an attic bedroom.

One contractor recommends (he has great references) to re-roof and then use dense-pack cellulose to fill the void between the sheathing and attic ceiling with cellulose. I like the idea - it seems to maximize the r-value.

Should I be concerned about moisture?

I am wondering about doing this without an airway to vent the space between the sheathing and the attic ceiling.

In Energy efficiency and durability | Asked By Peter kaczmar | May 12 09
3 Answers

Is installing cedar trim boards on top of bevel cedar siding a new way of letting the walls breathe?

I have a customer who just moved into this house and the inside,outside, and window trim boards are on top of the bevel cedar siding.I advised him that there is air infiltration and places for bugs. Another contractor told him it is the new way to let your walls breathe. I don't think it is, I would like some feedback. Thanks

In GBA Pro help | Asked By Jerome Furlano | May 10 09
6 Answers

Why haven't solar heat and photovoltaic panels been combined in one product?

The availability of appropriately oriented roof space for both would seem to make it a no-brainer to apply a thin film photovoltaic onto the cover of a solar heat panel. Sure, some efficiency of heat gain might be lost but you'd be getting electricity generation!

Any ideas?

In General questions | Asked By Stephen Fields | Mar 21 09
1 Answer

Should I dense pack my attic ceiling? Pros adn Cons?

Hi,

I need to re-roof my entire house including removing all of the sheathing.

I see this as an opportunity to re-insulate an attic bedroom.

One contractor recommends (he has great references) to re-roof and then use dense-pack cellulose to fill the void between the sheathing and attic ceiling with cellulose. I like the idea - it seems to maximize the r-value.

Should I be concerned about moisture?

I am wondering about doing this without an ariway to vent the space between the sheathing and the attic ceiling.

In Energy efficiency and durability | Asked By Peter kaczmar | May 12 09
0 Answers

Should we switch to bio-based spray foam insulation?

Have you used products such as BioBased or Heatlok Soy? We are in a cold climate, so the product must be a vapor barrier. We currently use Corbond, so we understand the benefits of spray foam over other types of insulation.

In Green products and materials | Asked By Adrienne Burt | May 12 09
7 Answers

How does the national Green Building standard rate vs energy star

I am a builder in Montgomery County Maryland. The County Council has mandated that by 2010 all new homes must be energy star rated. The bill also leaves the door open for alternatives that are comparable. I need to be able to have the information available for the Department of Environmental Control that compares a home that is rated by both Energy star and The national Green Building Standard to demonstrate that the national Green Building Standard would be a viable additional alternative for a builder to choose when building a new home in the County.

In General questions | Asked By Andy Rosenthal | Apr 27 09
4 Answers

Rigid foam on top of roof

Hi, I'm looking at remodeling a 1986 cape. It has R-19 in the roof rafters with Proper-vents from the eave to a unconditioned attic. The house has a shot cedar roof on 1x4 purlins. I am thinking of adding a layer of rigid foam (XPS or polyiso) on top of the 1x4s after stripping the cedar. I would then run a layer of furring strips parallel with the rake followed by 1/2" sheathing and standing-seam metal. Thoughts?

In Energy efficiency and durability | Asked By scott mangold | May 4 09
2 Answers

Dallas next week

How many of you will be in Dallas for the National Green Building Conference next week? If you're there, please stop by our booth and say hello. Peter Yost, Rob Wotzak, and I will be there and we'd love to meet some of you.

In General questions | Asked By Daniel Morrison | May 2 09
3 Answers

What is the most current "best practice" solution to the type of underlayment between SIP and the selected siding.

The standard 7/16" OSB sheathing on the SIP panel is bound to be moisture sensitive. What is the most effective underlayment or barrier to ensure adequate air flow between the selected siding and the SIP unit? Also: Which siding options (vinyl, cement board, etc.)can be fastened effectively to the OSB, given the absence of studs in the structure, which, if they existed would provide addequate support for applying almost any type of siding.

In Green building techniques | Asked By norman solomon | May 5 09
2 Answers

anyone have a good detail for insulating a knee wall?

anyone have a good detail for insulating a knee wall?

In Energy efficiency and durability | Asked By mike keesee | Apr 30 09
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